Heteropolymetallic aggregates from [Pd₂(dppf)₂(µ-S)₂]. Bonding and structural analysis of [Ag₂Pd₂Cl₂(dppf)₂(µ₃-S)₂]·4CH₂Cl₂[dppf = Fe(C₅H₄PPh₂)₂]—a flat {Pd₂S₂} core with two AgCl ‘tails’

Abstract

Nucleophilic addition of the heterometallic complex [Pd,(dppf),(p-S),] [dppf = 1,l '-bis(dipheny1phosphino)ferrocene] to [AgCl(PPh,)] or AgCl gave [Ag,Pd,Cl,(dppf),- (p,-S),], the first example of a heteropolymetallic aggregate based on a { Pd,S,} core and whose crystal structure shows a planar { Pd,S,} ring with two protruding AgCl fragments.* A similar result was obtained for Pt and Pd phosphine acetates," Pd phosphine acetates are known to be unstable.

Extending knowledge on the nucleophilicity of the {Pt2S2} core: Ph2PCH2CH2PPh2 as an alternative terminal ligand in [L2Pt(μ-S)2PtL2] metalloligands †

“…20 This could well explain why the complexes of formula [Pd 2 L 4 -(µ-S) 2 ], L 4 = 4 unidentate or 2 bidentate phosphine ligands, are poorly characterised and its chemistry virtually unknown. 21 The crystal structure of the triplatinum complex 2 shows the presence of chloride counter ions. As this complex forms easily by dissolving 1 in CHCl 3 or CH 2 Cl 2 the only possible source of the chloride ions is the solvent molecules.…”

Inter- and hetero-metallic assembly of palladium sulfide aggregates: crystal and molecular structures of [InPd2Cl3(dppf)2(μ3-S)2]·3CH2Cl2 and [Ag2Pd2(NO3)2(dppf)2(μ3-S)2]·2CH2Cl2

“…Preparation of Pd 2 (dppf) 2 (l-S) 2 was reported earlier [17]. Further experiments suggested that this complex has appreciable solubility in toluene.…”

Chapter 7. Oxygen, sulfur, selenium and tellurium

“…62 The latter has been the subject of investigations into its reactivity towards BiC1363 and C O C ~, ~~ whiIe the related species [Pd,(dppf),(p-S),] has been shown to undergo nucleophilic addition with AgC1. 65 Bidentate ligands of the type [Ex]'-are well known. ExampIes of the smallest, (x = 2) form when [TiHCp*2 J reacts with two equivalents of selenium or tellurium.…”